New Species of Sierola, With Explanatory Notes. 83 
tember 9, 1917; and one along Cooke’s trail, Nuuanu Valley, by D. T. Fulla- 
way, January 14, 1917. 
Type: Cat. No. 22, Bishop Museum. 
23. Sierola anthracina n.sp. 
@ shining black, the antennz basally and the legs yellowish brown, an- 
tenn distally and the femora infuscate. 
Head and thorax with a fine reticulate surface sculpture, finely, shal- 
lowly and fairly closely punctate and hairy. Head longer than wide, width 
between the eyes a little more than the length from the eye to the vertex; 
flatly convex above, depressed in front, tumid beneath, greatest depth behind 
the eye; vertical margin slightly concave, temples rounded but quite full, eyes 
flatly convex; antenne reaching the mesoscutum, all the segments a little 
longer than wide, pedicel twice as long as wide, antennal fosse deep; clypeus 
simple, flat on top, declivous at the sides, depressed apically, extended shortly 
in front of the anterior margin of the head as an acutely angulate projection, 
the base marked by converging lines from the sides, which meet in the middle 
and extend backward a short distance; mandibles fairly stout, bent near the 
middle, the distal portion twisted and flattened, obliquely truncate apically 
and toothed, base not touching the eye; cheeks narrow; gula and sides of the 
head flat, the former medially foreshortened, wider than long, anterior mar- 
gin semicircularly concave, posterior margin deeply incised; propodeum finely 
tugulose; abdomen elongate ovate, smooth and polished; wings subinfus- 
cate; length 3 mms. 
Described from one female (type) collected on Tantalus Mountain, 
Oahu, 1500 ft. elevation, by W. M. Giffard, December 22, 1918. 
Type: Cat. No. 23, Bishop Museum. 
24. Sierola konana n.sp. 
@ shining black, legs and antennze brown to fuscous. 
Head and thorax to the propodeum with a microscopically fine reticu- 
late surface sculpture, finely, shallowly and rather remotely punctate and 
hairy, the sculpture a little coarser on the propodeum. Head-wider than the 
thorax, longer than wide, widest across the eyes, narrowing behind and in 
front, length in front almost as great as the length behind the eyes, width 
between considerably more than the length from eye to vertex but less than 
twice as much; flatly convex above, depressed in front, tumid beneath, deep- 
est beneath the posterior end of the eye; vertical margin straight, temples 
rounded, eyes convex; antenne almost reaching the mesoscutum, the seg- 
ments of the flagellum all longer than wide, pedicel twice as long as wide, 
antennal fosse deep; clypeus short, nearly horizontal, medially longitudi- 
nally elevate and sloping at the sides, extended a little in front of the ante- 
rior margin of the head; mandibles large, bent in the middle and twisted, 
the distal portion flattened, truncate apically and toothed, base not reaching 
the eye; cheeks narrow; gula and sides of the head rather flat, the former 
medially foreshortened, wider than long, narrowing a little and slightly pro- 
tuberant behind, a shallow sulcus separating the two lobes; abdomen elon- 
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